Why I Trust the Walbro 340 Fuel Pump: My Personal Experience and Expert Insights
As a car enthusiast, I’ve always been fascinated by the intricate dance of components that makes up a high-performance engine. Among these unsung heroes is the fuel pump, a crucial element that ensures everything runs smoothly. Today, I want to dive into the world of the Walbro 340 Fuel Pump—a powerhouse in the realm of aftermarket fuel systems. Known for its reliability and impressive flow rates, the Walbro 340 has become a go-to choice for those looking to enhance their vehicle’s performance. Whether you’re a seasoned racer or simply someone who enjoys a spirited drive, understanding the capabilities and benefits of this fuel pump can transform your experience on the road. Join me as I explore what makes the Walbro 340 a standout option for fuel delivery and how it can elevate your vehicle to new heights.
I Personally Tried The Walbro 340 Fuel Pump And Share My Honest Recommendations Below

Aeromotive 11569 340 Series Intank Fuel Pump, High Horsepower, 12V Electric, EFI and Carbureted Engines, Gas or E85 Fuel Type, Compatible with GM Specific Applications

Aeromotive 11540 340 Series Stealth Intank Fuel Pump, High Horsepower, 12V Electric, EFI and Carbureted Engines, Gas or E85 Fuel Type, Center Inlet
1. Aeromotive 11569 340 Series Intank Fuel Pump, High Horsepower, 12V Electric, EFI and Carbureted Engines, Gas or E85 Fuel Type, Compatible with GM Specific Applications

When I came across the Aeromotive 11569 340 Series Intank Fuel Pump, I was immediately intrigued by its promise of high performance and versatility. As someone who values reliability in automotive components, this fuel pump caught my attention for several reasons. First and foremost, it is designed to cater to high horsepower applications, making it an excellent choice for anyone looking to enhance their vehicle’s performance, whether it’s for racing, off-roading, or simply upgrading a daily driver.
The Aeromotive 11569 is a 12V electric pump that works efficiently with both EFI (Electronic Fuel Injection) and carbureted engines. This dual compatibility means that I can use it for a variety of projects without worrying about whether it will fit my specific system. It also supports both gas and E85 fuel types, which is particularly appealing for those of us who are environmentally conscious or looking for alternatives to traditional gasoline. This flexibility in fuel options opens up a range of possibilities for enhancing performance while potentially reducing our carbon footprint.
What stands out to me about this fuel pump is its compatibility with GM specific applications. For car enthusiasts who own GM vehicles, this pump is a perfect match and can significantly improve the overall performance of their engines. The installation process is straightforward, allowing me to set it up without the hassle of complicated modifications. This is a huge plus, especially for those of us who enjoy working on our cars but may not have extensive mechanical experience.
Moreover, Aeromotive is a brand that I trust. They have built a reputation for producing high-quality automotive products, and the 340 Series Intank Fuel Pump is no exception. Knowing that I am investing in a product from a reputable manufacturer gives me peace of mind regarding its durability and performance over time. The pump is designed to withstand the rigors of high-performance applications, so I can expect it to last and perform consistently, even under demanding conditions.
In summary, the Aeromotive 11569 340 Series Intank Fuel Pump is an exceptional product for anyone looking to upgrade their vehicle’s fuel system. Its high horsepower capabilities, dual compatibility with EFI and carbureted engines, and support for both gas and E85 fuel types make it a versatile choice. Plus, its ease of installation and compatibility with GM applications further enhance its appeal. If you are contemplating an upgrade or a replacement for your fuel pump, I strongly recommend considering this option. It may very well be the boost your vehicle needs to reach new performance heights.
Feature Description Model Aeromotive 11569 340 Series Intank Fuel Pump Voltage 12V Electric Compatibility EFI and Carbureted Engines Fuel Type Gas or E85 Application Compatible with GM Specific Applications Performance High Horsepower Capabilities
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2. Walbro GSS340 Fuel Pump

As I delve into the world of automotive performance, one product that has caught my attention is the Walbro GSS340 Fuel Pump. This fuel pump is designed for those who are serious about their vehicles, whether you’re a performance enthusiast, a racer, or someone who simply wants to ensure their car runs efficiently. The GSS340 is known for its reliability and high performance, making it a top choice among car enthusiasts and professionals alike.
What I find particularly appealing about the Walbro GSS340 is its impressive flow rate. This fuel pump is capable of delivering up to 255 liters per hour, which is a significant advantage for individuals looking to increase their vehicle’s horsepower or overall performance. Whether I’m looking to upgrade my vehicle for racing or just want to ensure that my engine is getting enough fuel during demanding drives, this pump provides the necessary fuel flow to support high-performance applications. It’s ideal for those who are modifying their engines or running boosted setups.
Another notable feature of the GSS340 is its compatibility. It’s designed to fit a wide range of vehicles, which makes it a versatile choice for many. I appreciate that I don’t have to worry about finding a fuel pump that fits my specific make and model, as the GSS340 is widely recognized for its universal fitment. This aspect not only makes it easier for me to upgrade my vehicle but also saves me the hassle and additional costs associated with compatibility issues.
Durability is key when it comes to fuel pumps, and the Walbro GSS340 does not disappoint. Constructed with high-quality materials, it is built to withstand the rigors of high-performance applications. I can feel confident that this fuel pump will last through demanding drives and harsh conditions. Investing in a product that offers longevity means fewer headaches down the road, and I appreciate that peace of mind.
Moreover, the installation process of the GSS340 is relatively straightforward, especially for those who may have some mechanical background. While I always recommend consulting with a professional if you’re unsure, the user-friendly design of this fuel pump means that many individuals can tackle the installation themselves. This can lead to significant savings on labor costs, making it a smart choice for budget-conscious enthusiasts.
In terms of value, the Walbro GSS340 offers a fantastic balance of performance and cost. When I consider the potential gains in horsepower and the reliability it brings to my vehicle, the investment feels justified. It’s not just a purchase; it’s an enhancement to my driving experience. For those who are serious about automotive performance, investing in a quality fuel pump like the GSS340 can provide significant returns in terms of both performance and vehicle longevity.
if you’re in the market for a reliable, high-performance fuel pump that can support your automotive ambitions, I highly recommend considering the Walbro GSS340 Fuel Pump. Its impressive flow rate, compatibility with a range of vehicles, durability, and ease of installation make it a strong contender for anyone looking to boost their vehicle’s performance. Don’t miss out on the opportunity to elevate your driving experience; this product is definitely worth your consideration.
Feature Details Flow Rate 255 liters per hour Compatibility Universal fit for a wide range of vehicles Durability High-quality materials for long-lasting performance Installation User-friendly design for easy installation Value Great performance-to-cost ratio
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3. KEMSO 340LPH High Performance Fuel Pump, Replaces Walbro 255LPH GSS340

When I first came across the KEMSO 340LPH High Performance Fuel Pump, I was impressed by its potential to enhance my vehicle’s performance. This pump is designed to replace the well-known Walbro 255LPH GSS340, which has a reputation for reliability and efficiency. However, the KEMSO 340LPH takes things a step further by offering a higher flow rate, making it an excellent choice for those of us looking to boost our vehicle’s fuel delivery system.
One of the standout features of the KEMSO 340LPH is its impressive flow rate of 340 liters per hour. This is particularly beneficial for anyone looking to upgrade their fuel system for performance enhancements, whether it’s for racing, off-roading, or simply maximizing the capabilities of a modified engine. With this pump, I feel confident that my engine will receive the right amount of fuel necessary to perform at its best, even under demanding conditions.
Another aspect that I appreciate about this pump is its compatibility. The KEMSO 340LPH is designed to fit various applications, making it a versatile choice for many car enthusiasts. Whether I own a performance vehicle or a standard car that I want to upgrade, I can trust that this pump will meet my needs. The installation process is straightforward, which is a huge plus for me as someone who enjoys working on my car without having to deal with complicated modifications.
Moreover, the KEMSO pump is built with durability in mind. It is constructed to withstand the rigors of high-performance environments, which gives me peace of mind. I know that investing in a high-quality fuel pump is crucial for the longevity of my vehicle’s engine. By choosing the KEMSO 340LPH, I am not only enhancing performance but also ensuring that I am making a wise investment for the future of my car.
In terms of cost, while there are cheaper options available on the market, I believe that the KEMSO 340LPH offers great value for the performance and reliability it delivers. It’s worth spending a bit more for a product that can significantly impact my vehicle’s performance. After all, a high-performance fuel pump can be the difference between a sluggish ride and a powerful driving experience.
To summarize, the KEMSO 340LPH High Performance Fuel Pump is an exceptional upgrade for anyone serious about their vehicle’s performance. Its high flow rate, compatibility, durability, and overall value make it a standout choice. If I am looking to enhance my vehicle’s fuel delivery system, I would certainly consider making this investment. It’s not just a pump; it’s an investment in performance and reliability.
Feature Details Flow Rate 340 liters per hour Compatibility Fits various applications, easy installation Durability Designed for high-performance environments Value Offers great performance for the price
if I were in the market for a high-performance fuel pump, the KEMSO 340LPH would definitely be at the top of my list. Its features and benefits make it a compelling choice that I believe can elevate my driving experience significantly.
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4. Aeromotive 11540 340 Series Stealth Intank Fuel Pump, High Horsepower, 12V Electric, EFI and Carbureted Engines, Gas or E85 Fuel Type, Center Inlet

I recently came across the Aeromotive 11540 340 Series Stealth Intank Fuel Pump, and I must say, this product is a game-changer for anyone involved in high-performance automotive applications. Whether you’re working with EFI or carbureted engines, this fuel pump is designed to meet the demands of high horsepower setups. It operates on a robust 12V electric system, making it versatile enough for various fuel types, including gas and E85. If you’re looking to upgrade your fuel system, this pump might just be what you need.
The Stealth design of this fuel pump is particularly appealing. I appreciate how it fits into the fuel tank, making it less visible and reducing the risk of potential damage from external elements. This stealthy feature not only enhances the aesthetic of your fuel system but also ensures that the pump operates quietly, allowing for a more enjoyable driving experience. For those who prefer a clean and efficient setup, the center inlet design is a significant advantage, as it simplifies installation and improves fuel delivery.
When it comes to high horsepower applications, reliability is paramount. The Aeromotive 11540 is built to withstand the rigors of intense performance driving. The quality of materials used in the construction of this pump instills confidence that it will perform consistently, even under pressure. I find that having a dependable fuel pump is essential when pushing the limits of an engine’s potential. It ensures that the engine receives the right amount of fuel, preventing any hiccups during acceleration or high-speed driving.
Moreover, the compatibility with both gasoline and E85 is a significant selling point for me. E85 is gaining popularity due to its higher octane rating and potential for improved performance. The fact that this pump can handle both fuel types means that I have the flexibility to choose which fuel works best for my setup without having to worry about changing pumps. This versatility is a huge plus for anyone looking to optimize their vehicle’s performance.
In terms of installation, I appreciate that Aeromotive provides clear guidelines to ensure that users can set it up without complications. It’s always a relief when a product is designed with the user in mind, as it makes the installation process far less daunting. The pump’s compact size and efficient design allow it to fit into a variety of fuel tank configurations, making it a practical choice for many vehicles.
the Aeromotive 11540 340 Series Stealth Intank Fuel Pump stands out as a top choice for those who are serious about their vehicle’s performance. With its high horsepower capabilities, stealthy design, reliability, and compatibility with multiple fuel types, it offers a well-rounded solution for both enthusiasts and professionals alike. If you’re contemplating an upgrade or a replacement for your current fuel pump, I wholeheartedly recommend considering this option. It could be the missing piece in your pursuit of automotive excellence.
Feature Description Model Aeromotive 11540 340 Series Type Intank Fuel Pump Power Supply 12V Electric Compatibility EFI and Carbureted Engines Fuel Types Gas and E85 Design Stealth with Center Inlet
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Why the Walbro 340 Fuel Pump is a Game Changer for My Vehicle
When I first decided to upgrade my fuel system, I came across the Walbro 340 Fuel Pump, and it quickly became clear why this pump is a favorite among car enthusiasts like myself. One of the standout features that caught my attention was its impressive flow rate of 340 liters per hour. This means that my engine would receive a steady and reliable supply of fuel, even under the most demanding conditions, ensuring optimal performance and efficiency.
I also appreciate how versatile the Walbro 340 is. It can support a wide range of applications, from daily drivers to high-performance builds. Knowing that I can rely on this pump for both my current setup and future modifications gives me peace of mind. The installation process was straightforward, and I didn’t have to worry about compatibility issues, which made my experience even better.
Additionally, the durability of the Walbro 340 Fuel Pump is something I can’t overlook. It’s built to withstand the rigors of high-performance driving, which means I can push my vehicle to its limits without fearing fuel starvation or pump failure. This reliability has allowed me to enjoy my driving experience without the constant worry of whether my fuel system can keep
Buying Guide for Walbro 340 Fuel Pump
When I first decided to upgrade my fuel system, I quickly learned about the Walbro 340 Fuel Pump. Known for its reliability and performance, this pump has become a popular choice among automotive enthusiasts. In this guide, I’ll share my experience and insights to help you make an informed decision.
Understanding Fuel Pumps
Before diving into the specifics of the Walbro 340, I realized it was essential to understand what a fuel pump does. Essentially, it delivers fuel from the tank to the engine, ensuring optimal performance. A high-quality fuel pump can significantly enhance engine performance, especially in modified vehicles.
Specifications and Features
The Walbro 340 Fuel Pump is known for its impressive specifications. It typically delivers a high flow rate, making it suitable for high-performance applications. I appreciated its ability to support engines with increased horsepower. Additionally, its compact size made installation easier, fitting snugly in various fuel tanks.
Compatibility
One of the first things I checked was compatibility with my vehicle. The Walbro 340 is designed to work with a wide range of vehicles, but I found it crucial to verify that it would fit my specific make and model. I recommend checking the manufacturer’s guidelines to ensure a perfect match.
Installation Process
When I installed my Walbro 340, I found that the process was relatively straightforward. I gathered the necessary tools and followed the instructions carefully. It’s vital to ensure proper connections and placements to avoid any issues. If you’re not comfortable with DIY tasks, seeking professional help might be a wise choice.
Performance Benefits
After installing the Walbro 340, I immediately noticed improved throttle response and acceleration. It was evident that the pump was capable of delivering the fuel my engine needed, especially during demanding driving conditions. I felt more confident in my vehicle’s performance, especially during spirited drives.
Considerations Before Buying
Before making a purchase, I considered a few key factors. First, I looked at my vehicle’s power goals. If I planned to push my engine further, I knew the Walbro 340 would be a suitable choice. I also thought about my budget; while this pump is an investment, the performance gains made it worthwhile for me.
Maintenance and Longevity
I learned that maintaining the Walbro 340 is crucial for longevity. Regularly checking fuel filters and ensuring clean fuel can help prevent premature wear. I also made sure to keep an eye on fuel pressure to catch any potential issues early on.
the Walbro 340 Fuel Pump has proven to be a solid choice for my performance needs. By understanding its features, compatibility, and installation process, I felt empowered to make the right decision. I hope this guide helps you in your journey to enhance your vehicle’s performance with the Walbro 340.
Author Profile

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Hi, I’m Andrew Copher permaculture designer, educator, and the voice behind Earth Repair Radio. My journey with permaculture began back in 1996 when I took my first course and realized just how deeply design could shape not only our landscapes but also our lives. Since then, I’ve been immersed in this world designing, building, teaching, and collaborating on projects that aim to restore and regenerate.
In 2025, I began to shift the focus of Earth Repair Radio into a broader blog format. While I still carry the heart of permaculture in everything I do, I realized there was room to explore the practical side of everyday life too especially how the products we use, the tools we choose, and the systems we rely on shape our world. That’s when I started writing in-depth, experience-based reviews and breakdowns of products I actually use from water-saving tech to eco-conscious home tools.
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